With the increase of summer and autumn rain, the appearance rate of all kinds of rain gear has also been greatly improved. If in ancient times, how to "arm" yourself in rainy days? The original raincoat, which was used earlier and widely by the ancients, was "clothes" (pronounced the same as "doctor"). It is recorded in "Guoyu Qiyu" that "you can take off your clothes, put on Maopu for the first time, put on clothes, get all over your body, expose your skin violently, and try your best to make your limbs sensitive. "This is the costume of Qi farmers when they do farm work on rainy days, indicating that this primitive raincoat appeared in the pre-Qin period. As for the name of "hemp fiber", it later evolved, because Zhao Wei, a scholar of the State of Wu in the Three Kingdoms, interpreted it as "hemp fiber", and Li Shizhen's Compendium of Materia Medica Hattori said more specifically: "hemp fiber is a kind of grass, which is a rain-proof tool. In the Qing Dynasty, Hao Yixing's "Prove the Custom" also said: "The case is that the farmer sheltered from the rain, that is, the hemp fiber today." There are many kinds of materials for making casserole. According to Song Luoyuan's Er Ya Yi: "Today, sedge is a kind of bamboo hat, and bamboo shoots are also woven for it; Its platform is a dress. If it is woven into armor, it will hang down, so the rain will flow down. Cyperus sedge is a perennial herb with linear leaves, wide and smooth epidermis, strong waterproof performance and good rain-proof effect. In addition to sedge, mallow is also a good material for making calluses. Its leaves are palm-shaped, palm-shaped and fan-shaped, and the common cattail fan is made of mallow. The hemp fiber made of Pu Kui is also called "Kwai Clothes". Li, a writer in Qing Dynasty, recorded in "Notes on South Vietnam": "According to Guangdong customs, Kwai Clothes are used to shelter from the rain. "Tongzhi" says: Xinhui Pukui was originally a fan with a hat and a mushroom pad at the end. There is also an oil sunflower, which is mild in nature and can only be used as a hat. "In addition, there are rushes and white jade straws made of hemp fiber. In addition to good rain protection, another advantage of scorpions is that they can free their hands. Therefore, many workers like to wear it, whether it rains or snows. Zhang's "Fishing Songs" and Liu Zongyuan's "He Zhi" are proof. Moreover, in many ancient paintings, hemp fiber is also a "standard configuration" for fishermen.